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arXiv · 2510.12890

On $\lambda$-invariants of congruent modular forms in the anticyclotomic, indefinite setting

Dac-Nhan-Tam Nguyen
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Abstract

We give a precise, computable formula for comparing $\lambda$-invariants between modular forms in the anticyclotomic indefinite setting where the Selmer groups have positive rank. This is an improvement of Hatley-Lei \cite{HL19, HL21} where the authors give a formula with incomputable error terms.

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Dac-Nhan-Tam Nguyen. 2025-10-14. On $\lambda$-invariants of congruent modular forms in the anticyclotomic, indefinite setting. https://arxiv.org/abs/2510.12890

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